"Business interests
however are short-term. Easy immediate access to labour will always be
preferred to the costs of training and capital investment for the longer
term. In the nature of economic cycles, yesterday’s essential
labour can often become, as the defunct factories and mills of Europe
have shown, today’s unemployed. Employers who demanded immigrant labour
are not held to account for this or required to contribute to subsequent
costs of their unemployed former workers. Few things are more permanent
that temporary worker from a poor country. If business were made
responsible for the lifetime costs of their migrant labour in the same
way as they must now deal with the lifetime environmental costs of their
products, perhaps enthusiasm for labour migration might be moderated and
make way for longer-term investment in capital-intensive restructuring."

Open borders proponents promote the
economic benefits of illegal aliens (exploitation of underclass) to the US
economy but research shows huge costs to taxpayers.